Annunciator.



No. 813,931. 'PATENTBD FEB. 27, 1906. J. A. WOTTUN.

ANNUNGIATOR.

APPLIUATION FILED MAY 1B. 1904.

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i JAMES A. WOTTON, OF ATLANTA, GEORGIA.

Annuncia-roe.

Bpecication of Letters Patent.

Patented Feb. 27, 19GB.

Application filed May 16,'1904. Serial No. 208.226,

To alt whom t may concern:

Be it known that I, Janne A. Wo'rroN a citizen of the United States, residin at tlanta, in the county of Fulton and tate of Georgia,have invented certain new and useul Improvements-in Annunciatcrs and I do hereby declare thel following to be a full, clear, and exact description c the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to improvements in electrically-operated indicating mechanism, and particularly to that class of instruments known as annunciators While the invention is adapted for use wherever indicating devices are useful, it is es ecially well adapted for use in connection with telephoneexchanges Where annunciators or drops are required.

The invention consists in an annunciator comprisin a rotating indicator, an armature carrying t e same, a magnet having its poles projecting adjacent to the said armature, and means for connecting the magnet with certain electric circuits.

It also consists in an annunciator comprising a rocking indicator, an armature secured thereto and carrying the same, a magnet removably mounted adjacent to the armature, the ma et being easily replaceable at any time w le the indicator and armature can also be removed without affecting the magnet, and means for electrically connecting the megnet in a telephone-circuit. A k

t aso consists in certain other novel constructions, combinations, and arrangements of parte, as will be hereinafter f'ully described and claimed. y

In the accompanfying drawin Figure 1 is a front elevation c a portion o a telephoneannunciator. Fig. 2 is a longitudinal central section through one member of the annunciator. 3 is a detail sectionalvisw throu h the poles of the annunciator-magnet and t e pivot-pin c g the armature thereof, the armature and indicating-disk carried thereby being shown in rear e ovation. Fig. 4 is a iront elevation of the plate to which the magnet of the annunciator is secured, the poles thereof bein shown as projecting through the plate, wlnl'e the indicating-disk and its armature, to ether with the front plate, are removed. ig. 5 is a view in elevation of the indicator or disk provided with light and Acan be taken from its stud at any time.

Ydark surfaces for quickl attracting the attention of the operator when in use. j

The present invention is useful in all instances Where indicating means are desired and is useful in connection with annunciators of all sorts-such as those employed in hotels,

houses, railwal-carriages, or the like-but is especially use l in connection with a telephone system, and in the accompanying drawings the mechanism has been illustrated as adaptedor use in a telephone-exchange.

The object of the invention is the reduction cian annunciator or drop for a telisphone or other purpose in which the indicating drop or disk, together with its armature, can be easily reac ed for repair or adjustment without disturbing the actuating-magnet or its electrical connections.

The invention also has for a further object the arranging oi the parts so that the magnet of the annunciator can be easily removed and repaired or replaced at any time without disturbing the annunciator or indicator orits armature. This4 is frequently necessary in telphone-exchan es since the ma nets arey requentiy distur ed, injured, or estroyed bly the action of lightning or other heavy e ectrical currents.

Referring now to the accompanying illustration, the indicator and its armature, togather with the actuating-magnet, are supported by a plate 1. Projecting from said plate is a pin or stud 2, upon a reduced portion of whlch is pivotally mounted an armature 3. The armature 1s held upon said reduced portion by means of a nut or threaded Washer 4, which is screwed upon the end of the stud. By removing the nut 4 the armaiixre' 3 on the front face of the armature is secure an indicator 5, which is preferably a thin late, or disk having its surface marked with distinguishing colors, as shown in Fi 5. The portions 6 are generally made b ack, while the portions 7 ar'e made white, so as to make a decided contrast with the same. The armature 3 is approximately S shape inelevation, as clearly s own in Fig. 3, the said armature having a straight `nody portion extending beyond the pivot-stud on each side and is provided at its outer ends with laterall -projeoting tapering curved portions 8 8. he armature is preferably wei hted, so as to normally assume the osition s own in Fig. 3, with the small or re uced ends of the tapering portions 8 adjacent to the poles of the magnet. The weight 9 may be applied to the armature in any suitable manner or may, as shown in the drawings, be .secured to the disk or indincr face of t that when the iictized the action of gravity will bring the parts into the position shown in Fig. 3. One or more stops or pins 10,1projecting from the face of the plate 1, limit t e movement of the armature, so that the ends of the taperin portions 8 are sulciently near the poles o the magnet to be attracted when the magnet is energized.

Upon the front of the eringplate 11 is secured, face which tions placed upon the These apertures 12 are so shaped that when the indicator is held in its normal position by the weight 9 the darkened or black portions 6 only will show through the said o enings. When the armature is aiected by t e magnet, as will be hereinafter described, so as to turn the indicator 5, the light or white porl appear behind the openings 12. The face-plates 11 may be secured to the plate any desired manner, but are preferably fastened thereto by means of removable screws 13, which pass through spacingsleeves 14.

d replacing the same. In employing the device in an ordinary telephone-exchange a number of indicators are arranged side b side, as shown in Fig. 1, and by providing a separate face-plate foreach of the indicators any one of them may be removed for reaching the mechanism upon them without interfering with theadjacent face-plates or indicators.

Upon the rear of the plate 1 is mounted an electromagnet for each indicator. magnet is made in an ordinary manner, being provided with cores 15, surrounded by coils 16, .wound in any usual or ordinary manner. The ends of theeoils are secured toa plate 17 at one end, which plate is removably attached to the main plate 1. The pole ends 18 of the ma et reject through the plate 17 and also t oug apertures 19, formed in the plate 1. The `projectin ends of the poles are referabl approximate ycrescent. shape, as s own in 'gs. 3 and 4 of the drawings, the inner surfaces of the said oles being formed upon arcs concentric witlli) the periphery of the armature 3. In this manner the curved ends of the armature 3 may be moved quite closely to the inner surfaces of the poles 18, the cores 15 being connected at their outer ends by a plate or bar 20. The windings of gl important that the A1,"an

the coils 16 are connected with each other in t e usual manner, and conductors or Wires 2l and 22 extend from the said coils to such points that they may -be connected with the telephone instruments of a telephone system. The se coils are usually so or both, ceiver is a telephone-call, a circuit will be complete through the magnet, energizing the poles and acting upon the armature 3. As soon as the poles of the magnet are ener ized they will exert a pull upon the reduce ends 3 of the magnet and will draw the same until the straight body portion of the armature lies across from one pole to the other, thus al`ording an easy passage for the magnetic iiux in its travel from one pole to the other. strength of the magnet will be sufficient to move the armature 3 against the action of The moving of the armature of course effect a movement of the disk or ate 11 will attract the attention of the central operator. As soon as the central operator res onds and makes therproper connections tlie magnet will be cut out of circuit and the weight 9 will return the indicator to its normal position. When the magnet turns the armature 3, the White or contrastinlg surfaces 7 ap earin behind the blac ened plates 11 wil readgily attract the eye.

magnets shall be easily removable from the plate 1 and in such a manner as to not disturb the armature or disk. The magnet and its poles are therefore carried by the vplate 17 as above indicated, and this plate 1s provi ed with ears or projections 23, through which screws 24 are passed, the said screws en agin threaded apertures in the late 1. e po es 18 profeet loosel thrpugh) the apertures 19 in the (p ate when the screws 24 are remove the magnet can be easily taken from its normal position. Any one of the magnets at the rear of the plate 1 can be gotten at from the rear at any time and removed or replaced or repaired with ease.

While I have above described the magnets as so connected that w en a current is passed throu h them they will move the armature and t e indicating-disk into position to expose the dark surfaces of the indicator behind t e opening 12, lyl'et it will be apparent that t e magnets mig t be so connected as to normally return the indicating-disk so that the It is noo darkened or non-attracting surface of the invention.

Z the magnets are Aoften disabled or crippled the armature, the said magnet with lts poles i" The annunciator constructed in accordance with this inventionis so formed that any one of the indicators can be easily and quickly reached withoutdisturbing the ma ets and also 'any one 'of the ma ets -can e easily reached and rcnioved'wit out disturbing the armatures or indicators. The armatures and indicators are reached from one side ofv the main plate 1, while thernagnets are,

reached from the other side thereof. Since from the action oflightning, the ease with which such magnets can be reached and rel-v placed forms a valuable feature of ythe invention.

It will be understood that I contemplate employing any style or shape of indicator and usin the same in connection with house, hote or other annunciators, as well as with tele hone-dro s, as above described, all Within t e spirit o the invention.

Havin thus fully described my'invention',

what I c aim as new, and desire to secure by Letters Patent, is- Y 1. An annunciator comprising an armature and an indicator carried thereby and a magnet arranged with its axis parallel with the axis of the armature the'said magnet havi poles pro'ecting from its coils the said po es having t cir axes also parallel with the axis of the armature and capable of operating being removably mounted so that it may be withdrawn without disturbing the armature of the indicator.

2. An annunciator compris' a supporting-plate, an armature removab y mounted upon one side thereof, an indicator carried by the said armature and a m et removably mounted on the'opplosite si e of the plate e from the amature, t poles of, the magnet extending to points adlacent to the armature, the removal of the magnet being accomplished without disturbing thel armature or the indicator.

3. An annunciator mechanism comprising a supporting-casing, an ap roximately S- shape armature mounted t erein, an indicator secured to the armature and carried thereby, and a magnet secured to the said casing outside thereof the poles of said magnet projecting through the walls of the casing so as to occupy positions adjacent to the periphery ofthe armature.

4. An annunciator mechanism comprising a supporting-plate, a stud projecting therefrom, an armature mounted u on the said stud, an indicator carried by t ev amature, and a magnet mounted upon the plate with its axis a proximately at right anglesto the lane of tllie indicator the Vsaid'magnet being odil removable therefromwithout disturbmg the indicator, the poles'ofsaid magnet for affecting t e same when energized;

'5. An annunciator mechanism` comprising separable indicating mechanismand actuating mechanism, the indicat` mechanism compris an armature-and an indicator carriedthere y and a weight mounted upon the indicator tending to hold it normally in one position, |the actuatin mechanism comprismg a, magnet errang wd'acent to the arma- Ature, but removable there om longitudinali parallel with its axis without disturbing t e amature and indicator, the cles of the magnet beinghcapable of actuating the armature against 't e action of the weig t.

6. An annunciator mechanism comprising an inclosing casing, an apertured face-plate secured thereto, an armature mounted in the casing an indicator carried by the armature imm iatel to the real' of the face-plate, the surface oi t e indicator showing through the apertures in the face-plate, a removable magnet mounted outside the casing on one of the through thecasing-wall to points adjacent to the said armature for Vaffecting the same.

7. An annunciator mechanism com rising a supporting frame or casing, a remova le arv mature mounted therein, a rocking indicator carried by the said armature, a Weight `upon the indicator for holding the indicator normally in a given position, stops carried by the frame for engaging the armature and limiting its movement, and a m et removably mounted upon the outside o the casing, the poles thereof projecting within the casing for movin the indicator against the action of the weight the longitudinal movement of the magnet causing the withdrawal o' the poles wit out disturbin the indicating mechanism. 'In testimony wereof I hereunto aHix my signature in presence of two witnesses.

JAMES A. WOTTON.

Witnesses JonN L. Famenne,

CAssnLL SnvnnANon weils thereof, the poles thereof projecting extending to ositions adiacent thearmatureY IOO 

